What are the signs someone has a split personality?

This guy I'm dating is like 2 different people. So much so that I was convinced he had a twin and I was seeing them both 😂

I honestly started to think I was dating 2 different guys, so I actually looked for the scar on his arm just to make sure he didn't have a twin. Sounds crazy I know, but that's how severe it is.

It's as though he has a split personality or something. He is literally like 2 different people.

There's been times that he looked at me and it was as though he didn't know who I was. It's so weird and hard to describe.

What are the signs someone has a split personality?
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